In the near term, I’d estimate, based on my Bass model, that GitHub will hit 4 million users near August and 5 million near December.

Prediction from my January 2013 post. Take the red pill.

On August 7, GitHub reached 4 million and today, it topped 5 million — exactly as I predicted. Given these almost uncannily good results (according to its own user-search API), I couldn’t help but be reminded of a classic XKCD comic: